# A sample of 230 observations is selected from a normal population with a population standard deviation of 22. The sample mean is 17.a) Determine the standard error of the mean. (Round your answer to 3 decimal places.)  b) Determine the 95% confidence interval for the population mean. (Use z Distribution Table.) (Round your answers to 3 decimal places.)confidence interval _____________ and______________

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Asked Nov 7, 2019
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A sample of 230 observations is selected from a normal population with a population standard deviation of 22. The sample mean is 17.

a) Determine the standard error of the mean. (Round your answer to 3 decimal places.)

b) Determine the 95% confidence interval for the population mean. (Use z Distribution Table.) (Round your answers to 3 decimal places.)

confidence interval _____________ and______________

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## Expert Answer

Step 1

Given:

Step 2

a)

Standard error of the sample mean:

Step 3

b) To find 95% confidence interval for the p...

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